Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. Environmental Topics

Air Topics

A blue sky with clouds

Summary

Learn more about air pollution, climate change, air research, and what you can do. There are numerous air related challenges facing the United States today. Including but not limited to meeting health-based standards for common air pollutants, limiting climate change, reducing risks from toxic air pollutants, and indoor air quality.


EPA & You

What You Can Do

  • Carbon Footprint Calculator

  • Energy Star
    • About Energy Efficiency
  • Fuel Economy (MPG) Guide
  • Green Vehicle Guide
  • Indoor airPLUS
  • Smoke-Ready Toolbox for Wildfires
 

Pollution & Air Quality

  • Acid Rain
  • Climate Change
    • Climate Change Indicators including temperature and weather changes
    • Climate Change Research
  • Ozone Layer Protection
  • Visibility

Indoor Air

  • Asbestos
  • Indoor Air Quality
    • Volatile Organic Compounds (VOCs)
  • Mold
  • Radon
  • Wood Burning Appliances

Emissions 

  • Air Quality Management Process
  • AP – 42: Compilation of Air Emission Factors
  • Inventories and Emissions Factors
  • Greenhouse Gas (GHG) Emissions
  • Hazardous Air Pollutants
  • Technical Air Pollution Resources
  • Transportation Emissions
 

Air Quality by Location

  • AirNow: Air Quality by Zip Code, City, or State
  • AirNow Fire and Smoke Map

Air Pollutants

Criteria (NAAQS) Air Pollutants:

  • Carbon Monoxide (CO)
  • Lead (Pb)
  • Nitrogen Dioxide (NO2)
  • Ozone, Ground Level
  • Particulate Matter (PM)
  • Sulfur Dioxide (SO2)

Air Research

  • Air Research
    • Air Quality and Climate Change
  • Air Research Grants

Data

  • Air Quality Data Collected at Outdoor Monitors
  • Environmental Benefits Mapping and Analysis Program (BenMAP-CE)
  • Status and Trends of Key Air Pollutants

Laws and Regulations

  • Clean Air Act (CAA) Overview
    • Summary of the CAA
    • The Plain English Guide
  • National Ambient Air Quality Standards (NAAQS)
  • Regulatory Information by Topic: Air

About EPA

  • Office of Air and Radiation
  • Air, Climate, and Energy Research Program

Environmental Topics

  • Air Topics
  • Cancer
  • Chemicals, Pesticides, and Toxics Topics
  • Environmental Information by Location
  • Health Topics
  • Land, Waste, and Cleanup Topics
  • Science Topics
  • Water Topics
Contact Us
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on November 26, 2024
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.